Title:
CYLINDER GRINDING MACHINE
Document Type and Number:
WIPO Patent Application WO/2023/228591
Kind Code:
A1
Abstract:
The present invention pertains to a cylinder grinding machine that comprises: first and second detection means for detecting, in a non-contact manner, proximity between one end or the other end of a crystal rod and a spindle or a countershaft; and a drive mechanism which is capable of changing and adjusting the movement speed of a second support unit on the countershaft side. When one end of the crystal rod is to be supported through contact with the countershaft, a movement speed B of the second support unit during a period from when proximity between the one end and the countershaft is detected by the second detection means to when a contact for support takes place is so adjusted as to be slower than a movement speed A obtained until the detecting of proximity detection took place. Further, when the other end of the crystal rod is to be supported through contact with the spindle, a movement speed D during a period from when proximity between the other end and the spindle is detected by the first detection means to when a contact for support takes place is so adjusted as to be slower than a movement speed C obtained until the detecting of proximity took place. This configuration enables providing a cylinder grinding machine that makes it possible to minimize occurrences of breakage at terminal ends of a crystal rod and mechanical misalignment of a support unit during a loading process, to shorten the time required for the process, and to reduce the need for maintenance of portions for detecting the positional relation between the crystal rod and the spindle or the like.
Inventors:
NAKAGAWA KAZUYA (JP)
Application Number:
PCT/JP2023/013954
Publication Date:
November 30, 2023
Filing Date:
April 04, 2023
Export Citation:
Assignee:
SHINETSU HANDOTAI KK (JP)
International Classes:
B24B5/04; B24B41/06; B24B49/12; H01L21/304
Foreign References:
| JP2010221393A | 2010-10-07 | |||
| JP2009279721A | 2009-12-03 |
Attorney, Agent or Firm:
YOSHIMIYA Mikio et al. (JP)
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